diff --git a/src/freedreno/registers/gen_header.py b/src/freedreno/registers/gen_header.py
index 1d603dadfab..89a3ee9a60b 100644
--- a/src/freedreno/registers/gen_header.py
+++ b/src/freedreno/registers/gen_header.py
@@ -189,12 +189,13 @@ class Bitset(object):
 		print("    return (struct fd_reg_pair) {")
 		print("        .reg = (uint32_t)%s," % reg.reg_offset())
 		print("        .value =")
+		cast = "(uint64_t)" if reg.bit_size == 64 else ""
 		for f in self.fields:
 			if f.type in [ "address", "waddress" ]:
 				continue
 			else:
 				type, val = f.ctype("fields.%s" % field_name(reg, f))
-				print("            (%-40s << %2d) |" % (val, f.low))
+				print("            (%s%-40s << %2d) |" % (cast, val, f.low))
 		value_name = "dword"
 		if reg.bit_size == 64:
 			value_name = "qword"
@@ -264,7 +265,9 @@ class Bitset(object):
 				  (prefix, prefix, prefix, skip))
 
 
-	def dump(self, is_deprecated, prefix=None):
+	def dump(self, is_deprecated, prefix=None, reg=None):
+		if not reg:
+			return
 		if prefix is None:
 			prefix = self.name
 		if self.reg and self.reg.bit_size == 64:
@@ -283,14 +286,16 @@ class Bitset(object):
 			elif f.type == "boolean" or (f.type is None and f.low == f.high):
 				tab_to("#define %s" % name, "0x%08x" % (1 << f.low))
 			else:
-				tab_to("#define %s__MASK" % name, "0x%08x" % mask(f.low, f.high))
+				tab_to("#define %s__MASK" % name, "0x%08xull" % mask(f.low, f.high))
 				tab_to("#define %s__SHIFT" % name, "%d" % f.low)
 				type, val = f.ctype("val")
+				ret_type = "uint64_t" if reg.bit_size == 64 else "uint32_t"
+				cast = "(uint64_t)" if reg.bit_size == 64 else ""
 
-				print("static inline uint32_t %s(%s val)\n{" % (name, type))
+				print("static inline %s %s(%s val)\n{" % (ret_type, name, type))
 				if f.shr > 0:
 					print("\tassert(!(val & 0x%x));" % mask(0, f.shr - 1))
-				print("\treturn ((%s) << %s__SHIFT) & %s__MASK;\n}" % (val, name, name))
+				print("\treturn (%s(%s) << %s__SHIFT) & %s__MASK;\n}" % (cast, val, name, name))
 		print()
 
 class Array(object):
@@ -437,7 +442,7 @@ class Reg(object):
 			print("static inline%s uint32_t REG_%s(%s) { return 0x%08x + %s; }" % (depcrstr, self.full_name, proto, offset, strides))
 
 		if self.bitset.inline:
-			self.bitset.dump(is_deprecated, self.full_name)
+			self.bitset.dump(is_deprecated, self.full_name, self)
 		print("")
 
 	def dump_pack_struct(self, is_deprecated):